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Comeback for Tungsten lighting?


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#1 Keith Walters

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Posted 12 January 2016 - 05:44 PM

http://www.sciencema...-so-much-energy

 

This idea has been around for a while, but this is the first time I've heard of anybody actually making it work. The basic principle is to use an IR-reflecting mirror around the lamp filament to "recycle" the invisible infrared and use it to further heat the filament, producing more visible light.

Currently incandescents turn just 2% of their power input to visible light; they reckon they could get it up to about 40% which is considerably better than either fluorescent or LED lighting.

Their prototype is about 6%, roughly on par with cheaper LED and fluorescents.

 

Interesting times....


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#2 Mark Kenfield

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Posted 12 January 2016 - 09:44 PM

Very exciting tech! Here's hoping we can see it reach higher efficiency levels and weasel its way downstream to motion picture lighting bulbs.

Imagine a 2k fresnel offering the output of a 10k or even a 20k? And with nothing more than a bulb change required! Very very cool.
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#3 Christopher Santucci

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Posted 26 January 2016 - 11:30 AM

I'm all for it and all for the 100 CRI that tungsten affords. 


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